Cut-off for vapor-stoves.



` PATBNTED DEC. 22, 1903. L. STOGKSTRQM. CUT-OPF PoR VAPOR sToVEs.

APPLUIATION FILED FEB. 24, 1903.

Noy MODEL.

UNITED I STATES Patented December 22, 1903.

PATENT OFFICE.

sTovE COMPANY, on s'r. JERSEY.

LOUIS, MISSOURI, A CORPORATION OF NEW CUT-OFF FOR VAPOR-STOVES.

SPECIFICATION forming part of Letters Patent No. 747,798, dated December '22, 1903.

Application filed February 24, 1903. Serial No. 144,633. (No model.)

To alt whom it may concern:

Be it known that 1, LOUIS S'rooKs'rnoM, a citizen of the United States, residing in the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Cut-Offs for Vapor-Stoves, of which the following isa full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to that class of vaporstoves in which the supplytank is lowered into a horizontal position when -beingtilled,

and it has reference to means whereby theV flow of oil to the burner of the stove is discontinued when the tank is lowered and whereby the feed of oil from the supply-tank is cut off after the tank is again elevated until a part of the mechanism of the construction is actuated subsequent to the raising of the tank.

The invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Figure I is a sidev elevation of my cut-off. Fig. II is a rear elevation. Fig. III is a vertical section of the cut-off with the parts shown in the Vposition. assumed during the flow of oil to the burner. Fig. IV is a similar View to Fig. II, showing the parts in the position assumed when the tank is in lowered condition. Fig. V is a view showing the engagement of the valve lever-bar with the top of the stove, the position assumed by said part subsequent to the raising of the tank and previous to establishingV flow to the stoveburner.

1 designates the top of avapor-stove, which is provided at one end with an aperture 2.

5o the nipple 5 through the medium of a gland 9.

3 is a4 burner to which oil is conducted 10 is a neck projecting from the coupling 8 and having seated therein a gland 11.

12 is a rotatable valve-stern passing through the gland 11 and neck 10 of the coupling 8 and bearing at its inner end a needle-valve 13.

14 designates a lever held to the valve-stem 12 by a setscrew 15 and lhaving an arm 16,.

lot' lthe stove, as seen in Fig. V, and is provided intermediate ofl its ends with a notch 20, having'a shoulder 21, rthe latterof which is designed to engage the-top of the stove when the push-rod is in elevated position-for the purpose hereinafter mentioned. y

22 is a nger carried by the coupling8and adapted to travel in a path corresponding to that occupied by the lever-arm 16 in the 4act of lowering the supply-pipe 7 when the supply-tank is to be filled.

In the practical use of my cut-0E the paris operate as follows: During the use of the stove the parts of the cut-off are in the position seen in Fig. III, the valve 13 being unseated to permit free flow of oil from the supply-- pipe to the feed-pipe past the valve-seat 6. When the supply-pipe is lowered-from a vertical to a horizontal position for theilling of the tank, the nger 22, carried by the coupling 8, is rocked in a path corresponding to the position of the lever-arm 16 and by striking said lever-arm causes movement of the lever 14 to turn the valve-stem l2 and carry the coupling 8 Vand valve 13 .with simultaneous movement, so that thevalvo remains unseated and the communication between the feed-pipe and supply-pipe remains midisturbed; The linger 22 carries the valve-lever 14 upwardly fromthe position seen in Fig. II to that seen in Fig. IV, and in such movement the push-rod 17 is elevated through the aperture 2 in the stovetop,'and its'notchshoulder 2l engages the top of the stove by moving laterally, as illustrated in dotted lines, Fig. IV and as seen in Fig. V. When the supply-pipe is raised to a vertical position IOO after the tank carried thereby has been filled, the finger 22 moves away from the lever-arm 16, while said lever remains held in fixed position due to the engagement of the push-rod 17 with the top of the stove. It will be seen from the foregoing that as the coupling 8 is rot-a-ted on the raising of the supply-pipe the valve-stem l2 is held from rotation by the lever 14; remaining unmoved. The valvestem is screwed inwardly in said coupling and moves to the valve-seat 6, thereby shutting off communication between the supply-pipe 7 and the feed-pipe 4, so that the oil in the tank and supply-pipe is prevented from flowing into the feed-pipe. After the supply-pipe has been raised and it is desired to start use of the stove-burner, the push-rod 17 is disengaged from the top of the stove and pushed downwardly to carry the lever 14 from its elevated position to its lowered position, and thereby the valve-stem 12 is rotated to unseat the valve 13 and renew communication between the supply and feed pipes, which can at such time be safely accomplished. The communication between the feed and supply pipes 4: and 7 remains open, as stated, after the supply-pipe has been lowered into horizontal position, and it will be seen that the oil contained by the feed-pipe is` permitted to return to the empty supply-pipe when said pipe is lowered and is therefore completely removed from proximity to the burner of the stove during the act of filling the supplytank. The advantage of this provision is manifest, for there being no oil close to the burner the filling operation can be safely conducted and the burner again lighted after the cut-off has been manipulated to renew the supply of oil fed to the burner through the supply-pipe.

I claim as my inventionl. The combination with the feed and supply pipes of a vapor-stove, of a cut-off comprising a coupling and a screw-threaded valvestem therein through which communication between said pipes remains established when said supply-pipe is lowered in the act of lilliug it, and means whereby said screw-threaded valve-stern is actuated t0 close communication between said pipes when said supplypipe is again elevated, substantially as set forth.

2. The combination wiLhavapor-stove feedpipe and a supply-pipe arranged to be lowered in the act of filling its tank of a rotatable coupling uniting said feed and supply pipes, a valve screw-mounted in said coupling and controlling communication between said feed and supply pipes and arranged to remain unseated when said supply-pipe is moved into lowered position, means for moving said valve to maintain it in unseated position during the lowering of said supply-pipe, and means for retaining said valve from movement when the supply-pipe is again elevated, whereby the valve is brought to its seat, substantially as set forth.

3. The combination with the feed-pipe of a vapor-stove,ofa supply-pipe,a rotatable coupling uniting said feed and supply pipes and containing a valve-seat, a valve-stem screwmounted in said coupling and having a Valve opposing said valve-seat, a lever fixed to said valve-stem, means carried by said coupling adapted to engage said lever to move said Valve-stem simultaneously with the rotation of said coupling in one direction, and means for holding said lever to retain said valve-stem from movement when the coupling is rotated in the opposite direction, substantially as set forth.

4. The combination with the feed-pipe of a vaporstove,ofasupply-pipe,arotatable coupling uniting said feed and supply pipes and containing a valve-seat, a screw-threaded valve stem rotatably positioned in said coupling and having a valve opposing said valveseat, a lever fixed to said valve-stem, means carried by said coupling adapted to engage said lever to move said valve-stem simultaneously with the rotation of said coupling in one direction, and means for holding said lever to retain said valve-stem from movement when the coupling is rotated in the opposite direction, substantially as set forth.

5. In a cut-off for vapor-stoves, the combination of a feed-pipe provided with a nipple containing a valve-seat, a coupling rockingly mounted on said nipple, a valve screw-mounted in said coupling for movement to said valveseat., a supply-pipe, a lever carried by said valve-stem, a finger carried by said coupling to engage said lever, and a push-rod connected to said lever and means whereby said pushrod is held from movement after said lever has been shifted, substantially as set forth.

6. In a cut-off for vapor-stoves, the combination of a feed-pipe provided with a nipple containing a valve-seat, a coupling rockingly mounted on said nipple, a supply-pipe seated in said coupling, a valve-stemscrew-mounted in said coupling for contact with said valveseat, a lever connected to said valve-stem, a finger carried by said coupling to engage and rock said lever to seat said valve, and a shouldered push-rod connected to said lever and arranged to engage means whereby said pushrod is held from movement after it has been rocked by said linger, substantially as set forth.

` LOUIS STOCKSTROM.

In presence of- E. S. KNIGHT, M. P. SMITH. 

